2019/06/30 by Ali Övgün, İzzet Sakallı, Joel Saavedra +1
Physics and Astronomy · #Advanced Differential Geometry Research #Black Holes and Theoretical Physics #Black hole (networking) #Event horizon #Hawking radiation #Noncommutative and Quantum Gravity Theories #Noncommutative geometry #Noncommutative quantum field theory #Schwarzschild metric #Schwarzschild radius #Shadow (psychology) #gr-qc #hep-th
paper · pdf · doi:10.1142/s0217732320501631
published as Modern Physics Letters A 2050163 2020 · 8 pages. Accepted to publish in MPLA
openalex created_date 2019/06/27 · openalex publication_date 2020/05/13 · arxiv created 2020/05/15 · arxiv updated 2020/05/19 · openalex updated_date 2026/08/05
We study the shadow and energy emission rate of a spherically symmetric noncommutative black hole in Rastall gravity. Depending on the model parameters, the noncommutative black hole can reduce to the Schwarzschild black hole. Since the nonvanishing noncommutative parameter affects the formation of event horizon, the visibility of the resulting shadow depends on the noncommutative parameter in Rastall gravity. The obtained sectional shadows respect the unstable circular orbit condition, which is crucial for physical validity of the black hole image model.